JPS5741064A - Digital board trunk - Google Patents

Digital board trunk

Info

Publication number
JPS5741064A
JPS5741064A JP11583180A JP11583180A JPS5741064A JP S5741064 A JPS5741064 A JP S5741064A JP 11583180 A JP11583180 A JP 11583180A JP 11583180 A JP11583180 A JP 11583180A JP S5741064 A JPS5741064 A JP S5741064A
Authority
JP
Japan
Prior art keywords
parties
voice
speaker
party
noncall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11583180A
Other languages
Japanese (ja)
Inventor
Hidetoshi Takeshita
Osamu Kawai
Shohei Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11583180A priority Critical patent/JPS5741064A/en
Publication of JPS5741064A publication Critical patent/JPS5741064A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
    • H04M3/569—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants using the instant speaker's algorithm

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To hold a natural property of a conversation among three parties, by comparing the voice levels between the respective two parties, and sending out to each speaker a voice of a speaker whose voice level is higher between other two parties, in case of a three party simultaneous call among a calling party, a called party and a board operator. CONSTITUTION:PCM code information Ai (calling party), Bi (called party) and OPi (board operator) of an input highway HW1 are stored in order in input registers 10, 11 and 12, upper bit groups of each code are compared by comparators 20, 21 and 22, speakers whose voice level are higher between the respective two parties are decided by selectors 30, 31 and 32, are stored in a voice holding memory 60 through noncall pattern inserters 40, 41 and 42 (to be used for inserting a noncall pattern 50 in case of call by two parties) under control of a caller designating circuit 80, a PCM code is sent out to an output highway HW2 by an output shift register 70, and the voice is sent out to each speaker by reading each time slot.
JP11583180A 1980-08-25 1980-08-25 Digital board trunk Pending JPS5741064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11583180A JPS5741064A (en) 1980-08-25 1980-08-25 Digital board trunk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11583180A JPS5741064A (en) 1980-08-25 1980-08-25 Digital board trunk

Publications (1)

Publication Number Publication Date
JPS5741064A true JPS5741064A (en) 1982-03-06

Family

ID=14672193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11583180A Pending JPS5741064A (en) 1980-08-25 1980-08-25 Digital board trunk

Country Status (1)

Country Link
JP (1) JPS5741064A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6197841U (en) * 1984-12-04 1986-06-23
EP0872127A4 (en) * 1995-09-08 2001-04-11 At & T Wireless Services Inc Cordless cellular system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6197841U (en) * 1984-12-04 1986-06-23
JPH054282Y2 (en) * 1984-12-04 1993-02-02
EP0872127A4 (en) * 1995-09-08 2001-04-11 At & T Wireless Services Inc Cordless cellular system

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